:root {
  --paper: #f3efe6;
  --paper-2: #fffaf3;
  --ink: #1c2430;
  --ink-soft: #4d5664;
  --line: #d8d0c3;
  --seal: #8f2d2a;
  --pine: #1f4e45;
  --pine-soft: #e5f0ec;
  --warn: #6e4b16;
  --warn-bg: #f6ead2;
  --shadow: 0 16px 40px rgba(28, 36, 48, 0.06);
  --sans: "Noto Sans TC", "PingFang TC", "Noto Sans CJK TC", sans-serif;
  --serif: "Noto Serif TC", "Source Han Serif TC", "PMingLiU", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(1200px 400px at 10% -10%, rgba(143, 45, 42, 0.08), transparent 50%),
    linear-gradient(180deg, #f7f3eb 0%, var(--paper) 40%, #efe8dc 100%);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
}
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: var(--pine); }
.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--ink);
  color: white;
  padding: 0.4rem 0.8rem;
}
.skip:focus { top: 1rem; }

.shell { width: min(880px, calc(100% - 2rem)); margin: 0 auto; padding: 1.25rem 0 4rem; }
.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
}
.stamp {
  width: 3.1rem;
  height: 3.1rem;
  border: 2px solid var(--seal);
  color: var(--seal);
  display: grid;
  place-items: center;
  font-family: var(--serif);
  transform: rotate(-8deg);
  letter-spacing: 0.14em;
  font-size: 0.95rem;
  background: rgba(255, 250, 243, 0.7);
  flex: none;
}
.brand small { display: block; color: var(--ink-soft); letter-spacing: 0.08em; font-size: 0.78rem; }
.nav { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.nav a, .text-btn {
  border: 0;
  background: transparent;
  text-decoration: none;
  color: var(--ink);
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
}
.nav a[aria-current="page"], .text-btn:hover, .nav a:hover { background: rgba(28, 36, 48, 0.06); }

.hero { display: grid; gap: 1.25rem; }
.card, .question, .panel {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
}
.card { padding: 1.3rem 1.25rem 1.4rem; }
h1, h2, h3 { font-family: var(--serif); font-weight: 700; line-height: 1.35; margin: 0 0 0.6rem; }
h1 { font-size: clamp(1.8rem, 4vw, 2.5rem); }
h2 { font-size: 1.35rem; }
.lede { font-size: 1.05rem; margin-top: 0; }
.muted { color: var(--ink-soft); }
.row { display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center; }
.stack { display: grid; gap: 0.75rem; }

.btn, .choice {
  border-radius: 999px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: #f7f3eb;
  padding: 0.72rem 1.1rem;
  min-height: 44px;
}
.btn.secondary, .choice {
  background: transparent;
  color: var(--ink);
}
.btn.seal { background: var(--seal); border-color: var(--seal); color: #f7f3eb; }
.btn { white-space: nowrap; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.choice[aria-pressed="true"] { background: var(--ink); color: #f7f3eb; }
.choices { display: flex; flex-wrap: wrap; gap: 0.45rem; }

.banner {
  border-radius: 14px;
  padding: 0.75rem 0.9rem;
  background: var(--warn-bg);
  color: var(--warn);
  border: 1px solid #e4d2ae;
}
.banner.pine { background: var(--pine-soft); color: var(--pine); border-color: #c9ddd6; }
.error { color: var(--seal); }

.question { padding: 1.2rem 1.15rem 1.3rem; }
.question p { font-family: var(--serif); font-size: 1.28rem; margin: 0.3rem 0 0; }
.scenario, .question-follow { margin-top: 0.9rem; padding-top: 0.8rem; border-top: 1px dashed var(--line); }
.question-follow { font-family: var(--serif); font-size: 1.2rem; }
.kicker { letter-spacing: 0.08em; font-size: 0.78rem; color: var(--seal); margin: 0; }
.chips { display: flex; gap: 0.4rem; flex-wrap: wrap; margin: 0.8rem 0; }
.chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.1rem 0.55rem;
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.timer {
  font-variant-numeric: tabular-nums;
  font-size: 2rem;
  letter-spacing: 0.04em;
  margin: 0.2rem 0;
}
.timer small { font-size: 0.9rem; color: var(--ink-soft); margin-left: 0.4rem; }
.recorder {
  padding: 0.85rem;
  display: grid;
  gap: 0.7rem;
}
.meter {
  height: 8px;
  background: #ece4d6;
  border-radius: 99px;
  overflow: hidden;
}
.meter span { display: block; height: 100%; background: var(--seal); width: 0; }
textarea {
  width: 100%;
  min-height: 8rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  padding: 0.75rem;
  resize: vertical;
}
.transcript {
  white-space: pre-wrap;
  background: #f6f1e7;
  border-radius: 12px;
  padding: 0.8rem;
}

.dims { display: grid; gap: 0.8rem; }
.dim { padding: 0.9rem 1rem; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.dim header { display: flex; justify-content: space-between; gap: 0.8rem; align-items: baseline; }
.pips { display: flex; gap: 0.28rem; }
.pip { width: 0.72rem; height: 0.72rem; border: 1.5px solid var(--ink); border-radius: 2px; }
.pip.on { background: var(--ink); }
blockquote {
  margin: 0.5rem 0 0;
  padding-left: 0.8rem;
  border-left: 3px solid var(--seal);
  color: var(--ink);
}
.history { display: grid; gap: 0.6rem; }
.history button {
  text-align: left;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.8rem 0.9rem;
}
.footer-note, .site-footer { margin-top: 1.5rem; font-size: 0.92rem; }
.site-footer, .back-link { color: var(--ink-soft); }
.back-link { margin: -0.6rem 0 1rem; font-size: 0.92rem; }

@media (max-width: 640px) {
  .shell { width: min(100% - 1.2rem, 880px); }
  .question p { font-size: 1.16rem; }
  .brand small { display: none; }
  .nav a, .text-btn { padding: 0.4rem 0.45rem; }
  .btn, .choice { width: auto; }
}